Sewing-machine



(No Model.) 2 sheets-:sheet 2.

J. s. HOSMER.

SEWING MACHINE.

No. 260,027. Patented June 27, 1882.

nya

part of this specification.

UNITED STATES PATENT OFFICE.

JAMES S. HOSMER, OF GLOVERSVILLE,'NEW YORK.

' SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 260,027, dated June 27,i1882. Application filed March 9, 1881. (No model.)

To all whom it may concern Be it known that I, JAMES S. HOSMER, ofGloversville,Fulton county, State ofN ew York, have invented certainImprovements in Sewin g-Machines, of which the following is a full,clear, and exact description, reference being had to lthe accompanyingdrawings, forming My invention consists in the combination, with thedevice constitutingthe stitch-making mechanism of an over-edge-stitchsewing-mai chine, of a foot carrying a toe, and constructed ashereinafter particularly described, and arranged in rela-tion to thedevices of lsaid stitchmaking mechanism, as hereinafter specified,

' and for the purposes set forth.

Figure 1 is a view in perspective of a portion of an over-stitchsewing-machine having a loop-taker as one of the elements of thestitchmakin g mechanism, and embodying my invention. Fig. 2 is asectional view, looking downl ward, on the line x x, Fig. 1, the upperfeed# rolls being removed. Fig. 3 is a side elevation, in detail, of thefeed-rolls, needle, looptaker, and my improved foot. Fig. 4 is acrosssection of the foot on the line ma, Fig. 3. Fig. 5 is across-section of the toe of the foot on the line y y, Fig. 3. v

The object of this invention is to overcome the difficulty experiencedin over-edge-stitch sewing-machines in sewing a reed, wire, or cord uponthe edge of a fabric, said fabric being stili or pliable, and thefastening-stitcher being taken more or less back from the edge ofthefabric. This dificulty consists in the tendency of the fastening-thread,in being drawn over the edge of the fabric, to cause the fabric to rollupon itself or curl up under the track of the needle, thus producing anirregular and an imperfect seam, and also causing the wire, reed, orcord, which should be upon the edge of the fabric, to be twisted up onthe face of the fabric, and to lie irregularly thereon. These reeds,cords, or wires are sewed upon the edges of various manufacturedarticlessuch as hat-sweats composed of eithera double or singlethickness of pliable material, or upon bonnet-frames composed of asingle thickness of stiff material, or upon the edge of knitted, woven,or felted fabrics, more or Iless 'stili' or pliable, and used either insingle or double thickness; and it is frequently essential that l thefastening-stitches taken in the fabric should take into the same at samedistance back from the edge to which the reed or cord is attached, andthis is specially true in regard to knitted or lightly-woven fabrics. Itis to meet all is designed.

In Fig. 1 is shown a single-thread overstitch sewing-machine containingimproveto one William A. Polmateer on November 23,1875, No. 170,390,and'on February 20, 1877, No. 187,479, and a description in detail ofall the mechanism and devices of said machine may be found in saidLetters Patent. I shall only describe herein such parts as are necessaryto the comprehension of the present invention.

In this machine the stitch-making mechanism includes as one of itselemental' devices a loop-taker, although without altering the essentialfeature of this present invention the devices which I herein describeand claim as novel lnay be used in an over-stitch machine in which ashuttle is one of the elements o the stitch-making mechanism. v

chine shown consists of the needle A, which carries the single thread a,and which has a vertical reciprocatorymotion; the loop-taker B, whichhas an irregular combined reciprocatory and vibratory motion, andoperates to take up the loop in the thread lformed on the needle belowthe fabric and carry the same up over the edge of the fabric and presentit to be locked thereby in the next descent thereof 5 the lowerfeed-roller, C, which is pressed upward against the upperV dead-roller,C', and which has an intermittent rotary motion.

At D is shown my improved foot. This foot is preferablysecured to themachine by means of a leg, d, as shown. Thefoot is formed with thetapering toe, d', and it is placed just back of the point of contact ofthe feed-rollers and ward to somewhat beyond the line of the path of theneedle and in such relation to the inner descent will pass between theside of the toe these requirements that my present invention TheStitch-making mechanism ofthe ma edge of the feed-rollers that theneedle in its' ments for which Letters Patent were granted the needle onthe upper side of the fabric, to

in line therewith, with the toe d reaching forf IOO and the said edge ofthe rollers, as shown in v Figs. 1 and'2. I preferably cut a fiatchannel,

d2, through the heel of the foot, as seen plainly in the section in Fig.4, and alongside thereof, and preferably communicating therewith, thecylindrical channel d3. Through the channel d2 may be passed the edge ofthe fabric to which the wire, reed, or cord is to be sewed, and throughthe channel al3 may be passed the said wire, reed, or cord. The edgeofthe fabric is thus advantageously presented to the feedrollers and thewire, reed, or cord to the edge of said fabric under the needle. Thesechannels may be dispensed with, although they are of convenience, andthe fabric be inserted directly between the feed-rollers in the firstinstance, while the wire, reed, or cord, in starting the seam, may beheld to the edge of the fabric bytheoperator. Subsequently, and duringthe running of the seam, the wire, reed, or cord may be guided by handto the edge of the fabric.

It is evident that in operating an over-sttch sewing-machine having mydescribed foot and toe constructed and arranged in relation to thestitch-making mechanism as described, when the loop-taker B catches theloop made in the thread on the under side of the fabric and carries itup over the edge of the fabric the loop will pass over and around thepoint of the toe d', and while the needle is locking the loop in itsnext descent the entire strain on the thread Y will be borne by the toed and none will come upon the edge of the fabric or across the lineofthe wire, reed, or cord, and as the fabric is fed along to present itfor the next stitch the loop last locked will slip oi' from the taperingend of the toe, and the tension on the thread will then draw it toplace. Thus all tendency to roll or curl up the edge of the fabric or todraw inwardly onto the top of the fabric the wire, reed, or cord isavoided, and the production of a perfect seam and the attaching of thewire,reed, or cord upon the true edge of the fabric are secured.

It is also evident that the stitches may be taken back some distancefrom the edge of thc fabric, or that a wire, cord, or reed may besecured upon a fabric by stitches thus taken, and the tendency of thethread to roll the fabric over upon itself or to draw the wire or cordfrom the edge will be prevented.

In over-edge-stitch sewing-machines, where the needle vibrateslaterally, passing first through the fabric and then beyond the edge ofthe fabric successively, and a shuttle is employed to lock the stitch,my improved foot and toe may be employed wit-hout modification of theiressential features, care being taken to have the toe in the lateral pathof the needle, so that the strain on the thread made by thelocking-shuttle when the needle has descended beyond the line of theedge of the fabric will be borne by said toe.

What I claim as my invention isl. In an over-edge-stitch sewing-machine,the combination, with the stitch-making mechanism, of the foot D, havingthe toe d, constructed, arranged, and placed in relation to the devicescomposing such stitch making mechanism as described, and for the purposespecified.

2. In an over-edge-stitch sewing-machine, the combination, with thestitch-making mechanism, of the foot D, having the toe df, and providedwith the channels d2 and d3, all constructed, arranged, and placed inrelation to the devices composing such stitch making mechanism asdescribed, and for the purpose specified.

JAMES S. HOSMER.

Witnesses:

A. S. Frrcn, A. Q. W. VERMILYA.

